Trilliguese

by Arya Akhavan (January 2013)
Save to collection
No ratings yet
Gemology Projectopen
L/W
104%
Design RI
1.61
H/W
68%
Gear
96
V/W³
0.229
Symmetry
3 (mirrored)
Facets
178
Tiers
20
Crown
52
Pavilion
126

Well, you wanted it, so here you go. Good riddence. This was extremely frustrating to write - Portuguese designs work best in high symmetry, not a trillion. Doing this as an untruncated triangle was impossible. Works in materials from topaz to rutile (RI = 1.61 - 2.62) with no changes, but I prefer it in champagne topaz. Suggested size = 15-30 mm

Wireframe

Trilliguese 3D view
Top viewSide viewFront viewBack view

Pavilion

#AngleFacetsNotes
G190.00°
 32935616793
G290.00°
122044527684
G390.00°
164880
P368.99°
164880
Level girdle.
P268.32°
122044527684
Level girdle.
P747.06°
 32935616793
Meet P1, G1; P1, P4 (overcut X1)
P145.51°
 2 610141822263034384246505458626670747882869094
P443.51°
96 4 8121620242832364044485256606468727680848892
Meet P1, P3 (only 3 facets meet)
P542.00°
 2 610141822263034384246505458626670747882869094
Meet P1, P4
P640.50°
96 4 8121620242832364044485256606468727680848892
Meet P4, P5

Crown

#AngleFacetsNotes
C133.90°
164880
Set girdle width.
C229.28°
122044527684
Level girdle.
C329.28°
 32935616793
Level girdle.
C426.58°
 62638587090
Meet G1, G2, C2, C3
C526.58°
131945517783
Meet G2, G3, C1, C2
C623.06°
141846507882
Meet C1, C5
C722.10°
151747497981
Meet C1, C5, C6
C916.25°
112143537585
Meet C4, C5, C6, C8
C815.16°
 23034626694
Meet C3, C4; C4, C5, C6
T0.00°
24
Meet C7, C9; C8, C9